re-merge the --rsyncable patch

[debian/gzip] / doc / gzip.texi

diff --git a/doc/gzip.texi b/doc/gzip.texi
index 28b6f4c0ae5b0eab40f7b78e82beed42fd579c46..84887c3f0c26fa9fad564d9e26f6bad0f765577f 100644 (file)
--- a/doc/gzip.texi
+++ b/doc/gzip.texi
@@ -11,7 +11,7 @@ This manual is for GNU Gzip
 (version @value{VERSION}, @value{UPDATED}),
 and documents commands for compressing and decompressing data.
 
-Copyright @copyright{} 1998-1999, 2001-2002, 2006-2007, 2009 Free Software
+Copyright @copyright{} 1998-1999, 2001-2002, 2006-2007, 2009-2010 Free Software
 Foundation, Inc.
 
 Copyright @copyright{} 1992, 1993 Jean-loup Gailly
@@ -353,6 +353,14 @@ specified on the command line are directories, @command{gzip} will descend
 into the directory and compress all the files it finds there (or
 decompress them in the case of @command{gunzip}).
 
+@item --rsyncable
+While compressing, synchronize the output occasionally based on the
+input.  This can reduce the compression slightly in some cases, but
+means that the @code{rsync} program can take advantage of similarities
+in the uncompressed input when syncronizing two files compressed with
+this flag.  @code{gunzip} cannot tell the difference between a
+compressed file created with this option, and one created without it.
+
 @item --suffix @var{suf}
 @itemx -S @var{suf}
 Use suffix @var{suf} instead of @samp{.gz}.  Any suffix can be